Ipcc fifth assessment report in powerpoint slides 2014 11 02

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1. IPCC Fifth Assessment ReportIPCC AR5 Synthesis ReportSynthesis Report2nd November 2014Copenhagen 2. Key Messages➜ Human influence on the climate system is clear➜ The…

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1. IPCC Fifth Assessment ReportIPCC AR5 Synthesis ReportSynthesis Report2nd November 2014Copenhagen 2. Key Messages➜ Human influence on the climate system is clear➜ The more we disrupt our climate, the more werisk severe, pervasive and irreversible impacts➜ We have the means to limit climate change andbuild a more prosperous, sustainable futureIPCC AR5 Synthesis ReportAR5 WGI SPM, AR5 WGII SPM, AR5 WGIII SPM 3. Humans are changing the climateIt is extremely likely that we are the dominant cause of warmingsince the mid-20th centuryIPCC AR5 Synthesis ReportYearGlobally averaged combined land and ocean surfacetemperaturesAR5 WGI SPM 4. Temperatures continue to riseEach of the past 3 decades has been successively warmer thanthe preceding decades since 1850IPCC AR5 Synthesis ReportYearGlobally averaged combined land and ocean surfacetemperaturesAR5 WGI SPM 5. Oceans absorb most of the heatIPCC AR5 Synthesis Report➜ More than 90% of theenergy accumulatingin the climate systembetween 1971 and2010 hasaccumulated in theocean➜ Land temperaturesremain at historichighs while oceantemperaturescontinue to climb AR5 SYR 6. GHG emissions growth between 2000 and 2010 has beenlarger than in the previous three decadesIPCC AR5 Synthesis ReportAR5 WGIII SPM 7. Sources of emissionsEnergy production remains the primary driver of GHG emissions35%IPCC AR5 Synthesis Report24% 21% 14%6.4%2010 GHG emissionsEnergy SectorAgriculture,forests andother land usesIndustry TransportBuildingSectorAR5 WGIII SPM 8. IPCC AR5 Synthesis ReportAR5 SYR SPM 9. IPCC AR5 Synthesis ReportAR5 SYR SPM 10. IPCC AR5 Synthesis ReportAR5 SYR SPM 11. IPCC AR5 Synthesis ReportAR5 SYR SPM 12. IPCC AR5 Synthesis ReportAR5 SYR SPM 13. Some of the changes in extreme weather and climate eventsobserved since about 1950 have been linked to human influenceIPCC AR5 Synthesis ReportAR5 WGI SPM 14. Impacts are already underway• Tropics to the poles• On all continents and in the ocean• Affecting rich and poor countriesIPCC AR5 Synthesis ReportAR5 WGII SPM 15. Projected climate changesContinued emissions of greenhouse gases will cause furtherwarming and changes in the climate systemOceans will continue to warmduring the 21st centuryIPCC AR5 Synthesis ReportGlobal mean sea level willcontinue to rise during the21st centuryGlobal glacier volume willfurther decreaseIt is very likely that the Arctic seaice cover will continue to shrinkand thin as global mean surfacetemperature risesAR5 WGI SPM 16. Potential Impacts of Climate ChangeFood and water shortagesIncreased povertyIPCC AR5 Synthesis ReportIncreased displacement ofpeopleCoastal floodingAR5 WGII SPM 17. The window for action is rapidly closing65% of our carbon budget compatible with a 2°C goal already usedIPCC AR5 Synthesis ReportAmount Used1870-2011:515GtCAmountRemaining:275GtCTotal CarbonBudget:790GtCAR5 WGI SPM 18. Climate Change Poses Risk for Food ProductionIPCC AR5 Synthesis ReportAR5 SYR SPM 19. Stabilization of atmospheric concentrations requires moving away from thebaseline – regardless of the mitigation goal.Based on Figure 6.7IPCC AR5 Synthesis ReportAR5 WGIII SPM 20. Stabilization of atmospheric concentrations requires moving away from thebaseline – regardless of the mitigation goal.IPCC AR5 Synthesis Report~3°CBased on Figure 6.7 AR5 WGIII SPM 21. Figure SPM.10,A reader’s guideFrom climatechange risks to GHGemissionseIPCC AR5 Synthesis Report 22. Limiting Temperature Increase to 2˚CMeasures exist to achieve the substantial emissionsreductions required to limit likely warming to 2°CA combination of adaptation and substantial, sustained reductions ingreenhouse gas emissions can limit climate change risksImplementing reductions in greenhouse gas emissions posessubstantial technological, economic, social, and institutionalchallengesBut delaying mitigation will substantially increase thechallenges associated with limiting warming to 2°CIPCC AR5 Synthesis ReportAR5 WGI SPM, AR5 WGII SPM,AR5 WGIII SPM 23. Mitigation MeasuresMore efficient use of energyGreater use of low-carbon and no-carbon energy• Many of these technologies exist todayImproved carbon sinks• Reduced deforestation and improved forest managementIPCC AR5 Synthesis Reportand planting of new forests• Bio-energy with carbon capture and storageLifestyle and behavioural changesAR5 WGIII SPM 24. Ambitious Mitigation Is Affordable➜ Economic growth reduced by ~ 0.06%(BAU growth 1.6 - 3%)➜ This translates into delayed and not forgonegrowth➜ Estimated cost does not account for thebenefits of reduced climate change➜ Unmitigated climate change would createincreasing risks to economic growthIPCC AR5 Synthesis ReportAR5 WGI SPM, AR5 WGII SPM 25. The Choices We Make Will Create Different OutcomesWith substantialmitigationIPCC AR5 Synthesis ReportWithoutadditionalmitigationChange in average surface temperature (1986–2005 to 2081–2100)AR5 WGI SPM 26. IPCC Fifth Assessment ReportIPCC AR5 Synthesis ReportSynthesis Report

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